Improvement in apparatus for filtering sugar



WILLIAM H. MERRICK, OF PHILADELPHIA, PENNSYLVANIA.

Letters Patent No. 75,495, dated April 7, 1868.

IMPROVEMENT IN APPARATUS FOR PIL'I'BRING SUGAR.

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Be it known that I, WILLIAM H. Mnnn'rcrc, oi Philadelphia, Pennsylvania, have invented an Improvement inSugar-Filtering Apparatus 3 and I do hereby declare the following to be a full, clear, and exact description of the same I c My invention relates to that class of sugar-filtering apparatus iu which u. number of bags are suspended to a horizontal partition in a cast-iron box, the sirup passing from above the partition, and through 'a tube, into the bag. attached to the san'ic, and falling, in a filtered condition, into the bottom of the box; and my invention consists in dispensing with the usual screw-tube, and using in its place a nipple adapted to an opening in the partition, so large that the bag which is attached to the nipple can be elevated through it, thereby a'ording facilities l'or readily removing and replacing the bags, an operation which, in apparatus heretofore used, demndbd much exertion and tediousmanipulatiau.

in order to enable others skilled in the art to make and use myinvention, Itvill now proceed to' describe its construction and operation, reference being had to the accompanying drawing, which forms a part of this speciication, and in which- Figure 1 represents part of a sugardiltering apparatus, with zny improvement.

Figure 2", a plan view of lig. 1.

Figure 3, a. section of one of the double filtering-bags; and l Figure 4, a sectional view of' part of iiltering-apparatus, as heretofore constructed.

Similar let-tors refer to similar parts throughout the several views.

Before describing my improvements, it will be well tc explain briefly the usual mode of constructing the apparatus to which my improvement relates.

A large, rectangular box, of cast iron, having openings at the side, is used, and near the upper edge ofV this box is a horizontal partition, part of which is represented at A, iig. 4. A number of short tubes,- a, are screwed into lthis partition, cach tube projecting a short distance below thesame, for the reception of a nipple, b, fig. 4c, to which the mouths of two bags, one inside the other, are secured by wrapping stout cord round them.

The inner bag, of cotton duck, is larger than the outer bag, of coarser fabric, .so that the former must be corrugated or waved, as shown in fig. 3, leaving spaces orohannels between the tivo bags, for the lfree passage of the sirup, after passing through the interstioes'of the cotton-duclgthe siriip finally passing through the oui-er bag, and falling in ltered state to the bottom ofthe box. i

These bags have to be frequently removed and replaced, and this hasheretoi'ore been eiected by unseren?A ing the nipple of each bag from the projecting tube a, withdrawing the bag through the side openings of the box, and, after being cleansed, reinserting it through the side openings, and screwing its nipple to the projects ing end of the'tube. l

As there are a large number of bags in each box, and as their removal at frequent intervals is necessary, it will be evident that the operation conducted through the side openings must demand tedious manipulation,

und no little exertion on the part of the operator, who must necessarily occupy an uncomfortable position during his Work.h

To obviate these diiiculties, I secure each double bag to a nipple, B, ofthe form, or approximating to the form, shown in figs. 1 and 2, the bag being secured to the lower portion,'ii,"loi` the nipple, while the bevelled rim e of the upper portion is adapted to and forms a ground joint, with the bevel-led edge of an opening in the partition AV of the box, to which the bag is thus suspended, the opening in the partition being so large that the entire bag may be elevated through it.

Diller-ent devices may be employed for seizing 'the nipple when the bag has to be elevated, but the plan shown in the drawing is perhaps the simplest. This consists in so far closing the top of the nipple as to leave an elongated opeuing,f, into which a 1 -ended instrument may be inserted, and then turned a quarter round, so as to catch beneath the projecting portions, in, (see led lines, iig. 1.)

It will be evident that the diliculties and inconveniences above referred to may be overcomeby this mode of constructing 'the nipples, and adapting them to openings of suchen diameter that the bags can be elevated through them I claim as my invention, and desire to secure by Letterslntenti The nipple B, constructed substantially as described, for adaptation Vto un opening (in the partition A) large enough to admit of the passage through it of the bag attached to the nipple, all substantially as and for the purpose herein set forth. A M y n In testimony whcreo',I have signed my name to this specitication in the presence of two subscribing witnesses.

W. H. MERRCK.

Witnesses: Y

WM. M. Bnooxs, HENRY GILMORE. 

